| UTR Pro Tennis Series Portoroz | 2021/08/19 15:30 | Colin Sinclair v Aleksa Pisaric | 6-3,5-2 |
| UTR Pro Tennis Series Portoroz | 2021/08/18 12:30 | Yanais Laurent v Colin Sinclair | 5-7,5-7 |
| UTR Pro Tennis Series Portoroz | 2021/08/17 11:00 | Jan Vehovec v Colin Sinclair | 2-6,1-5 |
| ITF M15 Sofia | 2021/07/06 09:50 | Colin Sinclair v Dragos Nicolae Madaras | 3-6,2-6 |
| ITF M25 Belgrade | 2021/06/30 07:00 | Colin Sinclair v Edoardo Eremin | 2-6,1-6 |
| UTR Pro Tennis Series Bucharest | 2021/05/23 07:00 | Nicolae Frunza v Colin Sinclair | 5-6 |
| UTR Pro Tennis Series Bucharest | 2021/05/22 12:30 | Ilya Snitari v Colin Sinclair | 6-4,6-7,6-7 |
| UTR Pro Tennis Series Bucharest | 2021/05/22 07:00 | Colin Sinclair v Simon Beaupain | 6-3,6-4 |
| UTR Pro Tennis Series Portoroz | 2021/08/18 12:30 | Jan Vehovec v Tilen Zitnik | 3-6,5-7 |
| UTR Pro Tennis Series Portoroz | 2021/08/16 11:00 | Aleksa Pisaric v Tilen Zitnik | 6-3,4-6,6-1 |
| ITF Portugal F22 | 2018/10/21 12:45 | Tilen Zitnik v Marcos Torralbo-Albos | 5-7,3-6 |
| ITF Portugal F22 | 2018/10/20 14:00 | Lluis Dolz v Tilen Zitnik | 1-6,6-2,4-6 |
| ITF Portugal F21 | 2018/10/14 11:00 | Miguel Semedo v Tilen Zitnik | 7-5,6-3 |
| ITF Portugal F21 | 2018/10/13 10:00 | Tilen Zitnik v Alvaro S-R Ariza | 7-5,7-6 |
| Davis Cup | 2017/04/09 09:00 | Lloyd Harris v Tilen Zitnik | 6-3,6-3 |
| ITF Croatia F3 | 2017/03/18 10:30 | Marco Miceli v Tilen Zitnik | 2-6,6-2,6-1 |